A hyena got a fright when it tried to nibble on a 'dead' hippo - only to find out it was very much alive.<br /><br />A video shows the hyena skulking up to the huge hippo thinking it was a carcass, only to flee when the massive beast leaps up.<br /><br />Ismail Chalamila, 32, a safari guide, was on a tour in Ngorongoro Nature Reserve in Tanzania with five Europeans when he captured the moment on camera. <br /><br />Ismail regularly sees the same hippo on his tours and says he has seen the same hippo do this at least three times before.
